YUEH CHI ENTERPRISE YU-RA4002 Original Instruction

Operators Instructions
Includes-Foreseen Use, Work Stations, Putting Into Service,
Operating, Dismantling, Assembly and Safety Rules
Important
Read these instruction carefully before installing, operating,
servicing or repairing this tool. Keep these instructions in a
safe accessible place.
"Original Instruction"
Foreseen Use Of Tool
The impact wrench is designed for the tightening and
loosening of threaded fasteners within the rang as
specified by manufacturer. It should only be used in
conjunction with suitable impact type
female driver nut running sockets. Only use sockets
which are of the impact type.
It is allowed to use suitable extension bars, universal
joints and socket adaptors between the square output
driver of the impact wrench and the square female drive
of the socket. Do not use the tool for any other purpose
than that specified without consulting the manufacturer or
the manufacturer' s authorized supplier. To do so may be
dangerous.
Never use an impact wrench as hammer to dislodge or
straighten cross threaded fasteners. Never attempt to
modify the tool for other uses and never modify the tool
for even its recommended use as a nut runner.
Work Stations
The tool should only be used as a handheld hand
operated tool. It is always recommended that the tool is
used when standing on the solid floor. It can be in other
positions but before any such use, the operator must be in
a secure position having a firm grip and footing and be
aware that when loosening fasteners the tool can move
quite quickly away from the fastener being undone. An
allowance must always be made for this rearward
movement so as to avoid the possibility of hand/arm/body
entrapment.
Putting Into Service
Air Supply
Use a clean lubricated air supply that will give
a measured air pressure at the tool of 90
p.s.i./ 6.3bar when the tool is running with
the trigger fully depressed And the air
regulator in its maximum opening flow
position. Use recommended hose size and
length. It is recommended that the tool is
connected to the air supply as shown in
figure1
1/2" (13mm) square
.
All Pipe And Fitting
Should Be 1/2" Or Larger
Compressor
With Sufficient Capacity
To Maintain Recommended
Working Pressure At
Each Tool Outlet
Receiver Tank
40 Gallons Or More
Recommended Air Supply System
Product Type 1/2" Air Angle Impact
Wrench
Model YU-RA4002
1.Do not connect a quick connect coupling directly to the
tool but use a whip or a leader hose of say approximately
12 inches (300mm) length. Do not connect the tool to the
airline system without incorporating an easy to reach and
operate air shut off valve.
The air supply should be lubricated. It is strongly
recommended that an air filter, regulator, lubricator (FRL)
is used as shown in Figure 1 as this will supply clean,
lubricated air at the correct pressure to the tool. Details of
such equipment can be obtained from your supplier. If
such equipment is nit used then the tool should be
lubricated by shutting off the air supply to the tool,
depressurizing the line by pressing the trigger on the tool.
Disconnect the air line and pour into the intake bushing a
teaspoonful (5mL) of a suitable pneumatic motor
lubricating oil preferably incorporating a rust inhibitor.
Reconnect tool to air supply and run tool slowly for a few
seconds to allow air to circulate the oil. If tool is used
frequently lubricate on daily basis and if tool starts to slow
or lose power. When lubricating, also ensure that screen
in intake bushing is clean.
It is recommended that the air pressure at the tool whilst
the tool is running at 90 psi./6.3 bar. The tool can run at
lower and higher pressure with the maximum permitted
working air pressure of 100 psi./ 7.0 bar. For a lower air
pressure the tool will give a lower output for a given
setting of the sir regulator set for
and increased output for higher pressure. Hence it is
possible that changes in supply pressure can give
situation where the fastener is under over tightened. For
changes in pressure,
application should be reassessed. It is recommended that
joint tightness of the threaded fastener assembly be
checked with suitable measuring equipment.
Follow the national legislation of waste disposal.
Take Air From Top
Easy To Reach And
Operate Shut Off Valve
Air Regulator Set At
Recommended Working
Air Pressure
Drain Daily Filter Lubricator
90 psi./6.3bar.
the regulator position
Low Spot To
Trap Water
Air Tool
Drain Daily
Figure 1
operation
and